I have applied the fix from r[7396], though I still get this sometimes, very rare though.
Here's the crash:
Exception code: C0000005 ACCESS_VIOLATION
Fault address: 0048E562 01:0008D562 C:\\Mangos\\Mangostest\\mangosd.exe
Registers:
EAX:0BCA14A0
EBX:01307B98
ECX:13369E2C
EDX:0BCA14A0
ESI:0012FACC
EDI:0012FAA0
CS:EIP:001B:0048E562
SS:ESP:0023:0F0CF814 EBP:0F0CF84C
DS:0023 ES:0023 FS:003B GS:0000
Flags:00010202
Call stack:
Address Frame Function SourceFile
0048E562 00000000 Group::RemoveAllInvites+82
0048F10A 00000000 Group::Disband+2AA
0048EC07 00000000 Group::RemoveMember+377
004C4D43 00000000 Player::RemoveFromGroup+23
0071795C 00000000 WorldSession::HandleGroupLeaveOpcode+11C
006055AA 00000000 WorldSession::Update+16A
0062E784 00000000 World::UpdateSessions+154
0062A535 00000000 World::Update+365
00436D6E 00000000 WorldRunnable::run+8E
00888985 00000000 ZThread::ThreadImpl::Dispatch+1D5
00888DE3 00000000 ZThread::`anonymous namespace'::Launcher::run+33
0088CE97 00000000 ZThread::ThreadOps::_dispatch+17
78543433 00000000 _endthreadex+44
785434C7 00000000 _endthreadex+D8
7C80B713 00000000 GetModuleFileNameA+1B4
Call stack:
Address Frame Function SourceFile
7C90E4F4 00000000 KiFastSystemCallRet+0
7C802542 00000000 WaitForSingleObject+12
10009C04 00000000 __WSAFDIsSet+FFFFFFFFFFF84BCC
100764AA 00000000 __WSAFDIsSet+FFFFFFFFFFFF1472
1007266F 00000000 __WSAFDIsSet+FFFFFFFFFFFED637
006427AA 00000000 WorldSocketMgr::Wait+4A
0A12A214 00000000 0000:00000000
0A12A214 00000000 0000:00000000
6C696146 00000000